Attachment for artificial teeth



Feb. 25, 1936. J TAGUCHI 2,932,192

ATTACHMENT FOR ARTIFICIAL TEETH Filed NOV. 1, 1935 INVENTOR. J 7g g M C/Z A TTORNEYS'.

Patented Feb. 25, 1936 UNITED STATES PATENT OFFICE Application November 1, 1935, Serial No. 47,862 In Japan November 10, 1934 1 Claim.

in the mouth, simple in construction, low in cost,

easy in application without impeding regular arrangement of porcelain teeth, and reliable in function, by which sound teeth used as piers need not be artificially crowned and are not influenced by chewing force of the artificial teeth.

In the accompanying drawing:

Fig. 1 is a perspective view of an attachment according to the invention, on an enlarged scale for purpose of illustration.

Fig. 2 is a plan view of the attachment shown in Fig. 1.

Fig. 3 is a perspective view of the attachment, illustrating the same applied to its place.

Fig. 4 is a perspective view of the attachment, illustrating a stage of applying the same to its place.

Referring now to the drawing, I represents a gripping metal member having a front limb 2, a rear limb 3 and a projecting lug 4 at about the centre of the length of its stem. When an artificial tooth with a vulcanite-bed, or a denture with a vulcanite-bed carrying artificial teeth is put in position, the front limb 2 is adapted to clasp a pier tooth for bridging the said artificial tooth, or denture, at the front side of the said pier tooth near its neck, and the projecting lug 4 is adapted to engage against the undercut of the crown of the said pier tooth to prevent the said artificial tooth, or denture from vertically getting out of its position. The rear limb 3 is adapted to hold the gripping member I in its operative position in coaction with another gripping metal member which will be described hereinafter.

5 represents a second gripping metal member, which is rotatably mounted on the stem of the first gripping member I near its rear limb 3 by suitable means, such as a hole 6 provided in the said gripping member 5. One end I of the second gripping member 5 is adapted to clasp the said pier tooth at its back side near its neck, and at the same time to frictionally engage with the rear limb 3 of the gripping member I to hold the 0 said gripping member I in operative position,

when the artificial tooth, or denture is put in position, and the other end 8 is adapted to be embedded in one end of the vulcanite-bed of the artificial tooth, or denture. The gripping member 5 is preferably formed with a finger piece 9, which is adapted to frictionally engage with the rear limb 3 of the gripping member I to ensure holding the same in operated position in coaction with the end I of the gripping member 5. The finger piece 9 may be formed by turning up a part of the end of the gripping member 5 opposite to its clasping end, as shown. A leg I0 is movably mounted on the stem of the gripping member I near its front limb 2, which is adapted to be embedded in the end of the vulcanite-bed of the artificial teeth, or denture.

The attachment device is attached to one end of the vulcanite-bed as shown in the dash and dot line in Fig. 2, by embedding therein the end 8 of the gripping member 5 and the leg Ill mounted on the gripping member I.

The artificial teeth are put in position by slipping the attachment device over the pier tooth, with the end I of the gripping member 5 on the back side of the pier tooth, and with the front limb 2 of the gripping member I in vertical position, as shown in Fig. 4, and then the front limb 2 of the gripping member I is turned on the rear 20 gripping member 5 laterally over the pier tooth, so that the pier tooth is gripped by means of the front limb 2 of the gripping member I and the end I of the gripping member 5, the rear limb 3 being clipped between the end I and the finger piece 9 of the gripping member 5 to hold the gripping member I against free motion. At the same time, the projecting lug 4 will come into engagement to the pier tooth at the undercut of its crown, so that the artificial teeth are prevented from getting out of their position. With the attachment device, it will be apparent that the. artificial teeth can be easily removed, if necessary, by turning the gripping member I on the gripping member 5 to the vertical position as shown in Fig. 4.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed. I claim:-

An attachment device for artificial teeth comprising a gripping metal member to be fixed to the vulcanite-bed of the artificial teeth, having one end adapted to clasp a pier tooth in the bridge work at the back side and a finger piece forming a clip in coaction with the said one end of the gripping member, another gripping metal member rotatably mounted on the first mentioned gripping member, having a front limb adapted to clasp the pier tooth at the front side, a rear limb adapted to be clipped between the said one end and finger piece of the first mentioned gripping member, a projecting lug adapted to engage with the pier tooth at the undercut of its crown and a leg movably mounted thereon and adapted to be fixed to the vulcanite-bed.

JUNZO TAGUCHI. 

